公开(公告)号：US20240264418A1

公开(公告)日：2024-08-08

申请号：US18290303

申请日：2022-03-02

Applicant: NIKON CORPORATION

Inventor： Takuro ONO ,  Kosuke MACHIDA ,  Ayumu MAKIDA ,  Keisuke TSUBONOYA

IPC: G02B15/14 ,  G02B15/16

CPC classification number: G02B15/1461 ,  G02B15/16

Abstract: A variable magnification optical system including a plurality of lens groups, which is six or more lens groups and comprises a first lens group having positive refractive power and a rear group disposed closer to an image side than the first lens group, is configured so that at varying magnification the distances between the lens groups are varied, the first lens group consists of two or fewer lenses, and both the following conditional expressions are satisfied:






8
.
0

⁢
0

公开(公告)号：US20240255742A1

公开(公告)日：2024-08-01

申请号：US18290407

申请日：2022-03-02

Applicant: NIKON CORPORATION

Inventor： Takuro ONO ,  Kosuke MACHIDA ,  Ayumu MAKIDA ,  Keisuke TSUBONOYA

IPC: G02B15/14 ,  G02B15/20

CPC classification number: G02B15/1461 ,  G02B15/20

Abstract: A variable magnification optical system including a plurality of lens groups, which is six or more lens groups and comprises a first lens group having positive refractive power and a rear group disposed closer to an image side than the first lens group, is configured so that at varying magnification the distances between the lens groups are varied, the first lens group consists of two or fewer lenses, and both the following conditional expressions are satisfied:


7.50

公开(公告)号：US20210191112A1

公开(公告)日：2021-06-24

申请号：US16771672

申请日：2017-12-15

Applicant: Nikon Corporation

Inventor： Masashi YAMASHITA ,  Tomoki ITO ,  Hiroshi YABUMOTO ,  Hiroshi YAMAMOTO ,  Satoshi MIWA ,  Keisuke TSUBONOYA ,  Ayumu MAKIDA ,  Takeru UEHARA

IPC: G02B27/00 ,  G02B3/00 ,  G02B7/02 ,  G02B15/14 ,  G02B15/16

Abstract: An optical system (LS) includes lenses (L22,L23) satisfying the following conditional expressions, ndLZ+(0.01425×νdLZ)

公开(公告)号：US20230341666A1

公开(公告)日：2023-10-26

申请号：US18215306

申请日：2023-06-28

Applicant: Nikon Corporation

Inventor： Keisuke TSUBONOYA

IPC: G02B15/22

CPC classification number: G02B15/22

Abstract: An optical system (ZL(1)) comprises a plurality of lens groups including a first focusing lens group (G2) and a second focusing lens group (G4) that are disposed side by side on an optical axis, and the second focusing lens group (G4) is disposed at a position closer to an image surface than the first focusing lens group (G2). The first focusing lens group (G2) has positive refractive power, and moves toward an object along the optical axis from focusing on an infinite-distance object to focusing on a short-distance object. The second focusing lens group (G4) moves toward the image surface along the optical axis from focusing on the infinite-distance object to focusing on the short-distance object. The optical system (ZL(1)) satisfies the following conditional expression. −020

公开(公告)号：US20210026133A1

公开(公告)日：2021-01-28

申请号：US16771649

申请日：2017-12-15

Applicant: Nikon Corporation

Inventor： Masashi YAMASHITA ,  Tomoki ITO ,  Hiroshi YABUMOTO ,  Hiroshi YAMAMOTO ,  Satoshi MIWA ,  Keisuke TSUBONOYA ,  Ayumu MAKIDA ,  Takeru UEHARA

IPC: G02B27/00 ,  G02B3/00 ,  G02B15/14 ,  G02B15/163

Abstract: An optical system (LS) includes lenses (L22,L23) satisfying the following conditional expressions, ndLZ+(0.01425×νdLZ)

公开(公告)号：US20220283415A1

公开(公告)日：2022-09-08

申请号：US17624827

申请日：2020-06-19

Applicant: Nikon Corporation

Inventor： Keisuke TSUBONOYA

IPC: G02B15/22

Abstract: An optical system (ZL(1)) comprises a plurality of lens groups including a first focusing lens group (G2) and a second focusing lens group (G4) that are disposed side by side on an optical axis, and the second focusing lens group (G4) is disposed at a position closer to an image surface than the first focusing lens group (G2). The first focusing lens group (G2) has positive refractive power, and moves toward an object along the optical axis from focusing on an infinite-distance object to focusing on a short-distance object. The second focusing lens group (G4) moves toward the image surface along the optical axis from focusing on the infinite-distance object to focusing on the short-distance object. The optical system (ZL(1)) satisfies the following conditional expression. −020

公开(公告)号：US20220091400A1

公开(公告)日：2022-03-24

申请号：US17425470

申请日：2019-01-28

Applicant: Nikon Corporation

Inventor： Keisuke TSUBONOYA

IPC: G02B15/14

Abstract: A variable magnification optical system which comprises, in order from an object side, a first lens group having negative refractive power, a second lens group having positive refractive power and a third lens group; upon varying magnification, distances between the neighboring respective lens groups being varied; upon focusing, the first lens group and the second lens group being moved along the optical axis; and predetermined conditional expression(s) being satisfied, whereby the variable magnification optical system is made in small in size, and can correct superbly various aberrations.

公开(公告)号：US20210208373A1

公开(公告)日：2021-07-08

申请号：US17059466

申请日：2018-05-29

Applicant: Nikon Corporation

Inventor： Keisuke TSUBONOYA ,  Hiroki HARADA ,  Toshinori TAKE

IPC: G02B13/18 ,  G02B27/00 ,  G02B3/12

Abstract: An optical system comprises, in order from an object side, a front group having positive refractive power end a rear group. Upon carrying out focusing, the front group is moved along the optical axis. A predetermined conditional expression is satisfied. Thus, an optical system having a superb optical performance being able to correct superbly various aberrations and being suitable to be used with an imaging device having highly increased number of pixels, an optical equipment equipped therewith and a manufacturing method for the optical system are provided.

公开(公告)号：US20240402474A1

公开(公告)日：2024-12-05

申请号：US18805217

申请日：2024-08-14

Applicant: Nikon Corporation

Inventor： Keisuke TSUBONOYA

IPC: G02B15/22

Abstract: An optical system (ZL(1)) comprises a plurality of lens groups including a first focusing lens group (G2) and a second focusing lens group (G4) that are disposed side by side on an optical axis, and the second focusing lens group (G4) is disposed at a position closer to an image surface than the first focusing lens group (G2). The first focusing lens group (G2) has positive refractive power, and moves toward an object along the optical axis from focusing on an infinite-distance object to focusing on a short-distance object. The second focusing lens group (G4) moves toward the image surface along the optical axis from focusing on the infinite-distance object to focusing on the short-distance object. The optical system (ZL(1)) satisfies the following conditional expression. −020

公开(公告)号：US20230244066A1

公开(公告)日：2023-08-03

申请号：US18132463

申请日：2023-04-10

Applicant: Nikon Corporation

Inventor： Masashi YAMASHITA ,  Tomoki ITO ,  Hiroshi YABUMOTO ,  Hiroshi YAMAMOTO ,  Satoshi MIWA ,  Keisuke TSUBONOYA ,  Ayumu MAKIDA ,  Takeru UEHARA

IPC: G02B13/18 ,  G02B13/02 ,  G02B15/14 ,  G02B27/00

CPC classification number: G02B13/18 ,  G02B13/02 ,  G02B15/144113 ,  G02B15/144511 ,  G02B15/1461 ,  G02B27/0062 ,  G02B15/1425 ,  G02B15/143105

Abstract: An optical system (LS) includes lenses (L22,L23) satisfying the following conditional expressions,


νdLZ